<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script src="https://unpkg.com/vue@next">

    </script>

    <div id="app">
        <todo-item>
            <template #header>
                <h1>header</h1>
            </template>
            <template #body>
                <h1>body</h1>
            </template>
            <template #footer>
                <h1>footer</h1>
            </template>
        </todo-item>
    </div>

    <script>
        const vueOpt = {
            data(){
                return {

                }
            }
        }

        const app = Vue.createApp({});

        app.component('todo-item', {
            data(){
                return {

                }
            },

            template: `
                <div>
                    <slot name="header"></slot>
                    <slot name="body"></slot>
                    <slot name="footer"></slot>
                </div>
            `
        })

        app.mount('#app')
    </script>
</body>
</html>